2x^2-9=-81

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Solution for 2x^2-9=-81 equation:


Simplifying
2x2 + -9 = -81

Reorder the terms:
-9 + 2x2 = -81

Solving
-9 + 2x2 = -81

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + 2x2 = -81 + 9

Combine like terms: -9 + 9 = 0
0 + 2x2 = -81 + 9
2x2 = -81 + 9

Combine like terms: -81 + 9 = -72
2x2 = -72

Divide each side by '2'.
x2 = -36

Simplifying
x2 = -36

Reorder the terms:
36 + x2 = -36 + 36

Combine like terms: -36 + 36 = 0
36 + x2 = 0

The solution to this equation could not be determined.

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